package cn.have.filter;

import lombok.extern.slf4j.Slf4j;
import org.springframework.cloud.gateway.filter.GatewayFilterChain;
import org.springframework.cloud.gateway.filter.GlobalFilter;
import org.springframework.core.Ordered;
import org.springframework.http.HttpStatus;
import org.springframework.stereotype.Component;
import org.springframework.web.server.ServerWebExchange;
import reactor.core.publisher.Mono;

import java.lang.annotation.Annotation;
import java.util.Date;

/**
 * @ClassName MyLogGateWayFilter
 * @Author 王新
 * @Date: 2022/1/26 2:10 星期三
 * @Version 1.0
 * @Description
 */
@Component
@Slf4j
public class MyLogGateWayFilter implements GlobalFilter, Ordered {

    @Override
    public Mono<Void> filter(ServerWebExchange exchange, GatewayFilterChain chain) {
        {
            log.info("time:" + new Date() + "\t 执行了自定义的全局过滤器: " + "MyLogGateWayFilter" + "hello");

            String uname = exchange.getRequest().getQueryParams().getFirst("uname");
            if (uname == null) {
                log.info("****用户名为null，无法登录");
                exchange.getResponse().setStatusCode(HttpStatus.NOT_ACCEPTABLE);
                return exchange.getResponse().setComplete();
            }
            return chain.filter(exchange);
        }
    }


    @Override
    public int getOrder() {
        return 0;
    }
}
